From 79db1b4665d9a1a52c7a4b63f8bcbc6f22c03b3c Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Sun, 1 Dec 2019 11:23:05 +0100 Subject: [PATCH] video: lg4573: convert to DM convert this driver to support DM. Signed-off-by: Heiko Schocher --- drivers/video/lg4573.c | 175 +++++++++++++++++++++++++------- include/configs/aristainetos2.h | 2 - scripts/config_whitelist.txt | 2 - 3 files changed, 136 insertions(+), 43 deletions(-) diff --git a/drivers/video/lg4573.c b/drivers/video/lg4573.c index 46d9ec83ce..997e854ef8 100644 --- a/drivers/video/lg4573.c +++ b/drivers/video/lg4573.c @@ -5,36 +5,40 @@ * */ #include +#include +#include +#include +#include +#include #include #include +#include #define PWR_ON_DELAY_MSECS 120 -static int lb043wv_spi_write_u16(struct spi_slave *spi, u16 val) +static int lb043wv_spi_write_u16(struct spi_slave *slave, u16 val) { - unsigned long flags = SPI_XFER_BEGIN; unsigned short buf16 = htons(val); int ret = 0; - flags |= SPI_XFER_END; - - ret = spi_xfer(spi, 16, &buf16, NULL, flags); + ret = spi_xfer(slave, 16, &buf16, NULL, + SPI_XFER_BEGIN | SPI_XFER_END); if (ret) debug("%s: Failed to send: %d\n", __func__, ret); return ret; } -static void lb043wv_spi_write_u16_array(struct spi_slave *spi, u16 *buff, +static void lb043wv_spi_write_u16_array(struct spi_slave *slave, u16 *buff, int size) { int i; for (i = 0; i < size; i++) - lb043wv_spi_write_u16(spi, buff[i]); + lb043wv_spi_write_u16(slave, buff[i]); } -static void lb043wv_display_mode_settings(struct spi_slave *spi) +static void lb043wv_display_mode_settings(struct spi_slave *slave) { static u16 display_mode_settings[] = { 0x703A, @@ -72,11 +76,11 @@ static void lb043wv_display_mode_settings(struct spi_slave *spi) }; debug("transfer display mode settings\n"); - lb043wv_spi_write_u16_array(spi, display_mode_settings, + lb043wv_spi_write_u16_array(slave, display_mode_settings, ARRAY_SIZE(display_mode_settings)); } -static void lb043wv_power_settings(struct spi_slave *spi) +static void lb043wv_power_settings(struct spi_slave *slave) { static u16 power_settings[] = { 0x70C0, @@ -103,11 +107,11 @@ static void lb043wv_power_settings(struct spi_slave *spi) }; debug("transfer power settings\n"); - lb043wv_spi_write_u16_array(spi, power_settings, + lb043wv_spi_write_u16_array(slave, power_settings, ARRAY_SIZE(power_settings)); } -static void lb043wv_gamma_settings(struct spi_slave *spi) +static void lb043wv_gamma_settings(struct spi_slave *slave) { static u16 gamma_settings[] = { 0x70D0, @@ -173,54 +177,57 @@ static void lb043wv_gamma_settings(struct spi_slave *spi) }; debug("transfer gamma settings\n"); - lb043wv_spi_write_u16_array(spi, gamma_settings, + lb043wv_spi_write_u16_array(slave, gamma_settings, ARRAY_SIZE(gamma_settings)); } -static void lb043wv_display_on(struct spi_slave *spi) +static void lb043wv_display_on(struct spi_slave *slave) { static u16 sleep_out = 0x7011; static u16 display_on = 0x7029; - lb043wv_spi_write_u16(spi, sleep_out); + lb043wv_spi_write_u16(slave, sleep_out); mdelay(PWR_ON_DELAY_MSECS); - lb043wv_spi_write_u16(spi, display_on); + lb043wv_spi_write_u16(slave, display_on); } -int lg4573_spi_startup(unsigned int bus, unsigned int cs, - unsigned int max_hz, unsigned int spi_mode) +static int lg4573_spi_startup(struct spi_slave *slave) { - struct spi_slave *spi; int ret; - spi = spi_setup_slave(bus, cs, max_hz, spi_mode); - if (!spi) { - debug("%s: Failed to set up slave\n", __func__); - return -1; - } - - ret = spi_claim_bus(spi); - if (ret) { - debug("%s: Failed to claim SPI bus: %d\n", __func__, ret); - goto err_claim_bus; - } + ret = spi_claim_bus(slave); + if (ret) + return ret; - lb043wv_display_mode_settings(spi); - lb043wv_power_settings(spi); - lb043wv_gamma_settings(spi); + lb043wv_display_mode_settings(slave); + lb043wv_power_settings(slave); + lb043wv_gamma_settings(slave); + lb043wv_display_on(slave); - lb043wv_display_on(spi); + spi_release_bus(slave); return 0; -err_claim_bus: - spi_free_slave(spi); - return -1; } static int do_lgset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - lg4573_spi_startup(CONFIG_LG4573_BUS, CONFIG_LG4573_CS, 10000000, - SPI_MODE_0); + struct spi_slave *slave; + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_DISPLAY, + DM_GET_DRIVER(lg4573_lcd), &dev); + if (ret) { + printf("%s: Could not get lg4573 device\n", __func__); + return ret; + } + slave = dev_get_parent_priv(dev); + if (!slave) { + printf("%s: No slave data\n", __func__); + return -ENODEV; + } + lg4573_spi_startup(slave); + return 0; } @@ -229,3 +236,93 @@ U_BOOT_CMD( "set lgdisplay", "" ); + +static int lg4573_bind(struct udevice *dev) +{ + return 0; +} + +static int lg4573_probe(struct udevice *dev) +{ + return 0; +} + +static const struct udevice_id lg4573_ids[] = { + { .compatible = "lg,lg4573" }, + { } +}; + +struct lg4573_lcd_priv { + struct display_timing timing; + struct udevice *backlight; + struct gpio_desc enable; + int panel_bpp; + u32 power_on_delay; +}; + +static int lg4573_lcd_read_timing(struct udevice *dev, + struct display_timing *timing) +{ + struct lg4573_lcd_priv *priv = dev_get_priv(dev); + + memcpy(timing, &priv->timing, sizeof(struct display_timing)); + + return 0; +} + +static int lg4573_lcd_enable(struct udevice *dev, int bpp, + const struct display_timing *edid) +{ + struct spi_slave *slave = dev_get_parent_priv(dev); + struct lg4573_lcd_priv *priv = dev_get_priv(dev); + int ret = 0; + + dm_gpio_set_value(&priv->enable, 1); + ret = backlight_enable(priv->backlight); + + mdelay(priv->power_on_delay); + lg4573_spi_startup(slave); + + return ret; +}; + +static const struct dm_display_ops lg4573_lcd_ops = { + .read_timing = lg4573_lcd_read_timing, + .enable = lg4573_lcd_enable, +}; + +static int lg4573_ofdata_to_platdata(struct udevice *dev) +{ + struct lg4573_lcd_priv *priv = dev_get_priv(dev); + int ret; + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) { + debug("%s: Cannot get backlight: ret=%d\n", __func__, ret); + return log_ret(ret); + } + ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable, + GPIOD_IS_OUT); + if (ret) { + debug("%s: Warning: cannot get enable GPIO: ret=%d\n", + __func__, ret); + if (ret != -ENOENT) + return log_ret(ret); + } + + priv->power_on_delay = dev_read_u32_default(dev, "power-on-delay", 10); + + return 0; +} + +U_BOOT_DRIVER(lg4573_lcd) = { + .name = "lg4573", + .id = UCLASS_DISPLAY, + .ops = &lg4573_lcd_ops, + .ofdata_to_platdata = lg4573_ofdata_to_platdata, + .of_match = lg4573_ids, + .bind = lg4573_bind, + .probe = lg4573_probe, + .priv_auto_alloc_size = sizeof(struct lg4573_lcd_priv), +}; diff --git a/include/configs/aristainetos2.h b/include/configs/aristainetos2.h index 361e6ac654..d8858559d8 100644 --- a/include/configs/aristainetos2.h +++ b/include/configs/aristainetos2.h @@ -42,8 +42,6 @@ /* Framebuffer */ #define CONFIG_SYS_LDB_CLOCK 33246000 #define CONFIG_LG4573 -#define CONFIG_LG4573_BUS 0 -#define CONFIG_LG4573_CS 0 #include "aristainetos-common.h" diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt index cf1808e051..1e2196f83d 100644 --- a/scripts/config_whitelist.txt +++ b/scripts/config_whitelist.txt @@ -1017,8 +1017,6 @@ CONFIG_LD9040 CONFIG_LEGACY CONFIG_LEGACY_BOOTCMD_ENV CONFIG_LG4573 -CONFIG_LG4573_BUS -CONFIG_LG4573_CS CONFIG_LINUX CONFIG_LINUX_RESET_VEC CONFIG_LITTLETON_LCD -- 2.39.5